Data commit

Task/Bitmap-Flood-fill/Kotlin/bitmap-flood-fill.kotlin

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+// version 1.1.4-3
+
+import java.awt.Color
+import java.awt.Point
+import java.awt.image.BufferedImage
+import java.util.LinkedList
+import java.io.File
+import javax.imageio.ImageIO
+import javax.swing.JOptionPane
+import javax.swing.JLabel
+import javax.swing.ImageIcon
+
+fun floodFill(image: BufferedImage, node: Point, targetColor: Color, replColor: Color) {
+    val target = targetColor.getRGB()
+    val replacement = replColor.getRGB()
+    if (target == replacement) return
+    val width = image.width
+    val height = image.height
+    val queue = LinkedList<Point>()
+    var nnode: Point? = node
+
+    do {
+        var x = nnode!!.x
+        val y = nnode.y
+        while (x > 0 && image.getRGB(x - 1, y) == target) x--
+        var spanUp = false
+        var spanDown = false
+
+        while (x < width && image.getRGB(x, y) == target) {
+            image.setRGB(x, y, replacement)
+
+            if (!spanUp && y > 0 && image.getRGB(x, y - 1) == target) {
+                queue.add(Point(x, y - 1))
+                spanUp = true
+            }
+            else if (spanUp && y > 0 && image.getRGB(x, y - 1) != target) {
+                spanUp = false
+            }
+
+            if (!spanDown && y < height - 1 && image.getRGB(x, y + 1) == target) {
+                queue.add(Point(x, y + 1))
+                spanDown = true
+            }
+            else if (spanDown && y < height - 1 && image.getRGB(x, y + 1) != target) {
+                spanDown = false
+            }
+            x++
+        }
+        nnode = queue.pollFirst()
+    }
+    while (nnode != null)
+}
+
+fun main(args: Array<String>) {
+   val image = ImageIO.read(File("Unfilledcirc.png"))
+   floodFill(image, Point(50, 50), Color.white, Color.yellow)
+   val title = "Floodfilledcirc.png"
+   ImageIO.write(image, "png", File(title))
+   JOptionPane.showMessageDialog(null, JLabel(ImageIcon(image)), title, JOptionPane.PLAIN_MESSAGE)
+}